Data from: Steller’s jays assess and communicate about predator risk using detection cues and identity

Alexis C. Billings, Erick Greene & Dylan MacArthur-Waltz
Predators can vary in the risk they pose, depending upon the factors such as body size, maneuverability, hunting strategy, and diet. Prey can also detect predators with different senses, such as seeing, hearing, or smelling them. We presented wild Steller’s jays (Cyanocitta stelleri annectens) with visual cues (robotic raptors) or acoustic cues (call playbacks) of 4 different raptors to test how they assess risk and how this influences their alarm calls. The assessment of risk...
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These counts follow the COUNTER Code of Practice, meaning that Internet robots and repeats within a certain time frame are excluded.
What does this mean?